Pull-ups, rowing in a sitting position, high-position pull-down, straight-arm pull-down, rowing with one arm bent, and exercising back muscles. How to choose a reasonable one, please ask God for advice. Just select one from the drop-down list. The focus of back training is back strength. The posture must be correct. Don't borrow it The brain controls the force on the lower beam of latissimus dorsi. This control is difficult at first, but it is good to practice more. When you are exhausted, your arm should feel nothing. This is the back force. It's best to stretch before practicing.